PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-14:58:10
G05     50.6           13.4                5.4 +/-    0.86      13.9 +/-    0.86  0.060 / 0.160
G10     239.3          15.2                8.4 +/-    1.85      20.8 +/-    1.85  0.050 / 0.170
G13     71.0           36.6                7.2 +/-    0.96      11.1 +/-    0.96  0.040 / 0.060
G15     113.6          54.8               10.6 +/-    0.59      12.7 +/-    0.59  0.040 / 0.070
G16     313.8          11.5                4.9 +/-    2.41      13.3 +/-    2.41  0.170 / 0.190
G18     251.2          47.6                8.4 +/-    0.96      10.9 +/-    0.96  0.120 / 0.250
G20     28.3           64.5                8.1 +/-    0.59       8.8 +/-    0.59  0.050 / 0.040
G21     323.0          54.3                6.7 +/-    1.50       8.0 +/-    1.50  0.030 / 0.040
G26     285.1          19.2                6.6 +/-    1.78      14.9 +/-    1.78  0.160 / 0.530
G29     156.3          62.2               11.0 +/-    1.22      12.2 +/-    1.22  0.180 / 0.550